Geometric Series Quiz 3 (10 MCQs)

Quiz Instructions

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1. Calculate the sum of the first 4 terms of the geometric series $2, 6, 18, ..... $

Correct Answer: A) 80.

2. Apply the formula for the sum of a finite geometric series to find the sum of the first 3 terms of the series $3, 9, 27, ..... $

Correct Answer: A) 39.

3. What is the pattern rule for this pattern? 2, 4, 8, 16, 32,

Correct Answer: C) Start at 2. Double the number each time.

4. What is the next number in the sequence:3, 6, 12, 24, .....?

Correct Answer: B) 48.

5. Write the nth term formula: 3.5 + 7 + 14 + 28 + 56

Correct Answer: D) A$_{n}$ = 3.5(2)$^{n-1}$.

6. Which of the following is an example of a geometric sequence?

Correct Answer: D) 3,6,12,24, .

7. Find the rule the pattern is using:8,16,32,64

Correct Answer: B) Multiply 2.

8. The sum of 7 terms of the G.P 3, 6, 12, ..... is

Correct Answer: B) 381.

9. What is r for the following geometric sequence definition? a$_{n}$ = 12(1/2)$^{n-1}$

Correct Answer: C) 1/2.

10. Determine the next 2 possible terms in the list.400, 200, 100, 50, .....

Correct Answer: C) 25, 12.5.